Pass values to method and save it in array

hi please help me to solve this problem.i have three dropdowns in asp.net. i want to that when i select the items from dropdowns and click a button so the selected items should be passed to another mathod named passedvalues and in that method there shuld be three different arrays that save the items of those selected dropdowns.

The code behind for that would be something like this:

protected void Page_Load(object sender, EventArgs e)

{

if (!IsPostBack)

{

// create empty arrays and store them in session state

string[] array1 = new string[DropDownList1.Items.Count];

Session["Array1"] = array1;

string[] array2 = new string[DropDownList2.Items.Count];

Session["Array2"] = array2;

string[] array3 = new string[DropDownList3.Items.Count];

Session["Array3"] = array1;

}

protected void Button1_Click(object sender, EventArgs e)

{

PassedValues();

}

protected void PassedValues()

{

if (DropDownList1.SelectedIndex > -1)

{

string[] array1 = (string[])Session["Array1"];

array1[DropDownList1.SelectedIndex] = DropDownList1.SelectedValue;

}

if (DropDownList2.SelectedIndex > -1)

{

string[] array2 = (string[])Session["Array2"];

array2[DropDownList2.SelectedIndex] = DropDownList2.SelectedValue;

}

if (DropDownList3.SelectedIndex > -1)

{

string[] array3 = (string[])Session["Array3"];

array3[DropDownList3.SelectedIndex] = DropDownList3.SelectedValue;

}

If elements of a particular array remain null, then the items in the corresponding dropdownlist have never been selected when the button is pressed.

1 Reply

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Vulpes15y ago
Accepted answer
The code behind for that would be something like this:

protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
// create empty arrays and store them in session state
string[] array1 = new string[DropDownList1.Items.Count];
Session["Array1"] = array1;
string[] array2 = new string[DropDownList2.Items.Count];
Session["Array2"] = array2;
string[] array3 = new string[DropDownList3.Items.Count];
Session["Array3"] = array1;
}

}

protected void Button1_Click(object sender, EventArgs e)
{
PassedValues();
}

protected void PassedValues()
{
if (DropDownList1.SelectedIndex > -1)
{
string[] array1 = (string[])Session["Array1"];
array1[DropDownList1.SelectedIndex] = DropDownList1.SelectedValue;
}

if (DropDownList2.SelectedIndex > -1)
{
string[] array2 = (string[])Session["Array2"];
array2[DropDownList2.SelectedIndex] = DropDownList2.SelectedValue;
}

if (DropDownList3.SelectedIndex > -1)
{
string[] array3 = (string[])Session["Array3"];
array3[DropDownList3.SelectedIndex] = DropDownList3.SelectedValue;
}
}

If elements of a particular array remain null, then the items in the corresponding dropdownlist have never been selected when the button is pressed.
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